Subject: DNA sampling and isolation

Does anyone has any experience with sampling of DNA. We want to collect DNA from a large groups of elderly. Because the sampling should be performed by the persons themselves and we prefere to have the samples posted to us, we are looking for a cheap but effective method, e.g. cotton swaps or mouth washes in order to collect buccal cells. What are the pro's and con's of these methods and will the yield be sufficient to determine specific genes? Or are there other methods which can be used?

Re: DNA sampling and isolation